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Communication apparatus

a technology of communication apparatus and communication channel, applied in the field of communication channel, can solve the problem that the function of a new voice path cannot be started

Inactive Publication Date: 2008-06-12
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of using one of these functions, the function of newly using another voice path cannot be started due to the fact that there is typically only one voice path.

Method used

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  • Communication apparatus
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Embodiment Construction

[0024]Preferred embodiments according to the present invention will be described hereunder with reference to the drawings.

[0025]An embodiment of a cellular phone 1 according to the present invention will be described with reference to the accompanying drawings.

[0026]FIG. 1 is a diagram showing the construction of a network system 2 to which the cellular phone 1 according to the present invention is applied.

[0027]A network system 2 includes base stations 3A, 3B, etc. as fixed wireless stations each of which is located in each of cells to which a communication service supply area. Cellular phones 1A, 1B, 1C, etc. are wirelessly connected to the base stations 3A, 3B, etc. by a code division multiple access system such as the W-CDMA (Wideband-Code Division Multiple Access) system. For example, large-capacity and high-speed data communications can be performed at a data transfer speed of 2 Mbps under the stationary state and 384 kbps under the moving state by using a 5 MHz band of a 2 GH...

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Abstract

A communication device communicates with another communication device via an information managing device. The communication device includes a transmitter unit, a storage unit, and a control unit. The transmitter unit transmits presence information to the other communication device via the information managing device. The storage unit stores a program. If the communication device executes the program, the control unit judges whether the presence information currently registered needs to be changed based on executing the program. If the control unit judges that the presence information currently registered needs to be changed, the control unit changes the presence information based on executing the program. The control unit controls the transmitter unit to transmit the changed presence information as updated presence information to the other communication device via the information managing device.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is based upon and claims the benefit of priority from the prior Japanese Patent Application No. 2006-332278 filed Dec. 8, 2006, the entire contents of which are incorporated herein by reference.FIELD OF THE INVENTION[0002]The present invention relates to a communication apparatus, for example a cellular phone, or PDA.DESCRIPTION OF THE BACKGROUND[0003]Recently, there has been known a technique in which the standard of IMS (IP Multimedia Subsystem) is equipped in an information processing device such as a cellular phone or the like, messages are communicated (transmitted / received) among mates (friends) and the information is registered in a server on a real-time basis so that the information is shared by the mates and the present states are mutually notified among the mates (see JP-A-2001-244928).[0004]A presence information notifying function has been used as the function using IMS as described above. With respect to this...

Claims

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Application Information

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IPC IPC(8): H04B1/38H04M1/00H04M3/42H04W4/00H04W8/18
CPCH04M1/2745H04M1/72519H04M2207/18H04M3/42374H04M1/72547H04M1/27453H04M1/724H04M1/7243
Inventor ZHANG, YUE
Owner KK TOSHIBA